FreeBSD : cURL library -- cert name check ignore with GnuTLS (4e1f4abc-6837-11e3-9cda-3c970e169bc2)

This script is Copyright (C) 2013 Tenable Network Security, Inc.

Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

cURL project reports :

libcurl is vulnerable to a case of missing out the checking of the
certificate CN or SAN name field when the digital signature
verification is turned off.

libcurl offers two separate and independent options for verifying a
server's TLS certificate. CURLOPT_SSL_VERIFYPEER and
CURLOPT_SSL_VERIFYHOST. The first one tells libcurl to verify the
trust chain using a CA cert bundle, while the second tells libcurl to
make sure that the name fields in the server certificate meets the
criteria. Both options are enabled by default.

This flaw had the effect that when an application disabled
CURLOPT_SSL_VERIFYPEER, libcurl mistakenly also skipped the
CURLOPT_SSL_VERIFYHOST check. Applications can disable
CURLOPT_SSL_VERIFYPEER and still achieve security by doing the check
on its own using other means.

The curl command line tool is not affected by this problem as it
either enables both options or disables both at the same time.

See also :

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 4.0

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 71530 ()

Bugtraq ID:

CVE ID: CVE-2013-6422

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